RU2338016C1 - Soft armor - Google Patents

Abstract

FIELD: textile industry, paper industry.

SUBSTANCE: invention relates to textile industry. Soft armor is produced by means of the main weaves and their derivatives with the ratio of fiber set of the warp and weft at most 2.0 with connectivity coefficient at least 5.0 and yield at minimum 290 g/m². Reinforced beam and filling threads are used, they have aramid filament or fiber glass filament with titer of at least 6.3 tex as a core, and secondary spun aramid fiber with titer of beam and filling threads of at least 50 tex. is used as a cover.

EFFECT: production of fiber for special protective clothes and fabrics for protection from ballistic impact, fire, thermal exposure, napalm.

3 cl, 4 dwg, 1 tbl, 6 ex

Description

The invention relates to the textile industry and is proposed for use in creating special protective clothing and products from ballistic shock, fire, thermal radiation, napalm.

From patent RU 2258105, D03D 15/12 of 08/10/2005, a technical fabric is known made from yarn comprising staple fibers of a triple copolyamide or a mixture thereof with natural or artificial or synthetic fibers (prototype).

The fabric has a low resistance to burning (1.5-3 seconds), is unstable to light in the visible part of the spectrum, does not have ballistic properties.

The problem to which the invention is directed is to create protective fabrics for the manufacture of products of the following applications - protection against ballistic shock, thermal radiation, fire, napalm, from exposure to oil and gas products.

The technical result is achieved by the fact that the fabrics are made from the main and weft reinforced twisted thread. The increase in the strength characteristics of the fabric occurs due to the structure of the reinforced yarn having a high-strength core and a fleecy sheath that excludes the extension of the threads, due to increased friction at the contact points of the warp and weft threads in the fabric element.

For the manufacture of fabric using the main and weft reinforced twisted thread with a linear density of not less than 50 tex.

The fabrics are made using the main weaves and their derivatives with the ratio of the densities of the threads along the warp and weft no more than 2.0, with a connection coefficient of at least 5.0 and a surface density of at least 290 g / m ² .

Reinforced thread is produced on a rotor spinning machine from a rod and spinning tapes, creating a shell at the rod.

Aramid complex filaments or glass fibers of linear density of at least 6.3 tex are used as a rod. Spinning tapes are produced from aramid staple yarn obtained from recycled materials.

Recycled materials are waste generated during the cutting of products from woven fabrics developed from aramid multifilament yarns.

Aramid complex yarns for a core are understood to be yarns based on an aromatic copolymer of dibasic terephthalic acid chloride and diamines of benzimidazole and p-phenylenediamine or an aromatic polymer of poly-p-phenylenebenzimidazole.

Staple fibers based on a polymer of poly-p-phenylene terephthalamide or an aromatic copolymer of dibasic terephthalic acid and diamines of benzimidazole and p-phenylenediamine or poly-p-phenylenebenzimidazole or polymethaphenylene isoflamide are used as aramid staple yarn for the sheath.

The invention is illustrated by the following examples.

Example 1. The protective fabric is made by weaving reinforced satin 8/3 (Fig. 1) from the main and weft reinforced yarn of linear density 50 × 2 tex with a core of aramid multifilament yarn. The surface density is 380 g / m ² . The coefficient of tissue connectivity is 5.0 with a ratio of the density of threads on the warp and weft 1.25. The fabric has high strength characteristics (table 1), has fire retardant properties (does not burn and does not smolder after removal from the flame), has a high resistance to burning - 105 s (according to GOST 12.4.184-97, this figure should be at least 30 s) . The fabric is resistant to oil and gas products.

Example 2. The protective fabric is made by interlacing the wrong sateen (figure 2) from the main and weft reinforced threads of linear density 55.6 × 2 tex with a core from aramid complex threads. The coefficient of tissue connectivity is 5.16 with a ratio of the density of threads on the warp and weft 1.28. The surface density is 335 g / m ² . The fabric has high strength characteristics (table 1), has fire retardant properties (does not burn and does not smolder after removal from the flame), has a high resistance to burning - 76 s (according to GOST 12.4.184-97, this figure should be at least 30 s) . The fabric is resistant to oil and gas products. The fabric withstands ballistic impact. When testing for a fragment of a package weighing 4 kg / m ^{2, the} speed of 50% non-penetration (V50) is 434 m / s.

Example 3. The protective fabric is made plain weave (figure 3) from the main and weft reinforced yarn of linear density 58.3 × 2 tex with a core of aramid complex yarn. The surface density is 297 g / m ² . The coefficient of tissue connectivity is 7.3 with a ratio of the density of threads on the warp and weft 2.0. The fabric has high strength characteristics (table 1), has fire retardant properties (does not burn and does not smolder after removal from the flame), has a high burning resistance of 57.6 s (according to GOST 12.4.184-97, this figure should be at least 30 s). The fabric is resistant to oil and gas products.

Example 4. The protective fabric is made by weaving twill 2/2 (figure 4) from the main and weft reinforced yarn of linear density 83 × 2 tex with a core of glass fiber. The coefficient of tissue connectivity is 5.38 with a ratio of the density of threads on the warp and weft 1.3. The surface density is 404 g / m ² . The fabric has high strength characteristics (table 1), has fire retardant properties (does not burn and does not smolder after removal from the flame), has high resistance to burning - 82 s (according to GOST 12.4.184-97, this figure should be at least 30 s) . The fabric is napalm resistant.

Example 5. The protective fabric is made by weaving twill 2/2 of the main and weft reinforced threads of linear density 55.6 × 2 tex with a core of aramid complex thread. The coefficient of tissue connectivity is 5.1 with a ratio of the density of threads on the warp and weft 1.28. The surface density is 240 g / m ² . The fabric has high strength characteristics (table 1). The fabric has ballistic properties. When tested in an anti-ricochet package (two layers) according to protection class 2, the speed of 50% non-penetration (V50) is 429 m / s. When tested in an anti-ricochet package (three layers) according to protection class 5, the speed of 50% non-penetration (V 50) is 771 m / s. The fabric has fire-retardant properties (does not burn, does not smolder after removal from the flame) and is resistant to oil and gas products.

Example 6. The protective fabric is made by interlacing a 2/2 matting from the main and weft reinforced threads of linear density 83 × 2 tex with a glass fiber core. The coefficient of tissue connectivity is 5.95 with a ratio of the density of threads on the warp and weft 1.2. The surface density is 400 g / m ² . The fabric has high strength characteristics (table 1), has fire retardant properties (does not burn and does not smolder after removal from the flame), is resistant to napalm. The fabric is resistant to oil and gas products.

Table 1 The mechanical properties of the protective tissue according to examples 1-6 Example No. Surface density, g / m ² The tensile strength of a strip of fabric 50 × 200, N Tearing load, N based by duck based by duck one. 380 4752 3436 784 730 2. 335 4652 3983 760 930 3. 300 4757 2810 562 582 four. 404 5174 4225 730 780 5. 290 3744 2522 489 460 6. 400 4863 4677 868 941

Claims (3)

1. Protective fabric containing a warp and core-type yarn of warp and warp, twisted in at least two folds, in which an aramid multifilament yarn or glass fiber of linear density of at least 6.3 tex is used as a core and a staple aramid fiber was used as a sheath, with a linear density of the warp and weft threads of at least 50 tex, and a surface density of the fabric of at least 290 g / m ² . 2. The fabric according to claim 1, which is made plain weave, or reinforced satin, or wrong satin, or twill, or matting. 3. The fabric according to any one of claims 1 and 2, in which a secondary staple aramid fiber is used as a sheath.

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